Pattern-carrier for metal work-tables.



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PATTERN CARRIER FOR METAL WORK TABLES.

(Application filed Sept. 11, 1899.)

3 Sheets-Shet l.

(No Model.)

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No. 65|,233. Patented :une 5,1900.

C. M. CARNAHAN.

PATTERN CARRIER FOR METAL WORK TABLES.`

(Application lved Sept. 11, 1899.) (No Model.) 3 Sheets-Sheet 2.

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\ No. 65I,233.

l Patented lune 5, |900.

C. M. CARNAHAN.

PATTERN CARRIER FOR METAL WORK TABLES.

(No Model.)

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(Application led Sept. 11, 1.899.)

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Nrrnn STATES PA'rnN Erica, g

CYRUS M. CARNAHAN, ALLEGHENY, PENNSYLVANIA', ASSIGN OR TO HIM- SELF, AND SAMUEL B. GRIFFITH AND JOSEPH F. DUFFEY, OF PITTSBURG,

PENNSYLVANIA.

PATTERN-CARRIER FOR IVIETAL WORK-TABLES.

SPEGEFICATION forming part of Letters Patent No. 651,233, dated June 5, 1QOO.

Application 5185i September 11. 1899. Serial No. 730,071. (No motlelJ To @ZZ whom it may con/00771,:

Be it known that I, CYRUs M. CARNAHAN, of Allegheny, in the county of Allegheny and State of Pennsylvania, lhave invented a new and useful Improvement in Pattern-Carriers for Metal fork-Tables, of which the following is a full, clear, and exact description, reference being` had to the accompanying drawings, forming part of this specification, in

:o which- Figure 1 is a top plan View of my improved pattern-carrier for metal work-tables. Fig. 2 is alongitudinal section of the same. Fig. 3 is an end view of the same. Fig. 4 is a detail i5 top plan View of the clutch for moving'the carriage, and Fig. 5 is a cross-sectional view of the same.

Like figures of reference indicate like parts wherever they occur.

Myinvention consists in an improved metal work-table and pattern-carrier adapted to punch, stamp, or cut metal or metal plaies according toa pattern which rests on the table and serves as a guide to the plate as it moves under the punch, stamp, or cutter, so that the punch, stamp, or cutter shall reproduce the pattern in punching, stamping, or cutting the metal without any preliminary laying out thereon.

l will now describe my invention as it is applied to punching plates, it being readily understood that a stamp or cutter may be substituted for the punch and the apparatus be used for cutting` or stamping plates or other shapes of metal.

In the drawings, 2 represents a table of gen'- eral rectangular form and of suitable Width and length for the class of work for which it is intended. Centrally located on the table 2 are rails 3 3, upon which moves a carriage 4, on which the Workman is seated and from which he manipulates the pattern and plate.

The carriage-operating mechanism consists in a longitudinal bar 5, provided on its sides with serrations about one-sixteenth of an inch apart, which serrations are engaged by a sliding block or clutch. This clutch consists of a boX 6, which surrounds the bar 5 and is provided on one side with a movable serrated plate 7, the serrations of which are adapted to engage the serration of the bar 5. Pivoted to the-plate 7 is a rock-arm 8, which rockarm above and belowits pivotal point engages oppositely-inclined faces of the bars, Which are secured to the block 6 by throughbolts. The plate '7 is provided with lugs 10, and between the lugs and the block 6 are interposed springs 11, which tend to disengage the plate 7 from the bar 5 when the rock-arm 8 has passed the mid-position of the two inclines. The purpose of this block is to engage and take hold of the bar 5 to afford a movable point of attachment from which the carriage 4 can be moved` in either direction, the block being,r capable of movement after themovement of the carriage to obtain a. new -grip on the bar. This movement of the block on the bar is caused by a lever attachment consisting of a link 12, pivoted to lugs 13 on the block and to the lower end of a lever 14, which is pivoted at 15 to the carriage 4. The binding and loosening action of tue block G on the bar 5 is caused by the foot-lever 16,which is connected to the rock-arm 8 by the link 17 and is capable of moving .the rock-arm in either direction. The automatic loosening of the clutch is accomplished by the lever 16, which is provided with an arm 1S, which engages a bar 19, which depends from the carriage 4, and this armlS is adapted to release the plate 7 bymoving the rock-arm 8 beyond the midposition between the inclines whenever the carriage is moved forward by the `hand-lever v14. The plate 7 is automatically released in the opposite direction by an arm 20, which is provided with a projection 21, which engages the bar 19 when the carriage is moved inthe opposite direction.

The pattern and plate holding mechanism consists of a v pair of longitudinal rods 22, which are connected by spacers 23', located at suitable points in the lengths of the rods. The lower rod 22 is pivoted to the bar 19, secured to the carriage 4, and the longitudinal movement is imparted to the bars 22 bysaid connection with the carriage-that is, the bars move with the carriage. The upper rod 22 is provided with movable clamps 24, preferably loosely mounted thereon and held in the proper location by collars 25, securedV to the rod 22 by set-screws or other fastening'. `The clamps 24 are provided with suitable grooves adapted to hold the plate and are provided With clamping-screws 26, which hold the plate and also serve to secure the pattern 27 to the plate or to the clamp. An addi- IOO tional connection between the plate and the carriage 4 is afforded by the cross-shaft 28, connected with the rear axle 29 by the bars 30. The cross-shait28is provided with clam ps 3l, which may slide loosely on the shaft and clamp the plate. This not only serves to square the plate, but also affords a convenient means of attachment for narrow plates or bars. The plate rests and moves on the rollers 40.

The pattern 27, as shown in the drawings, consists of a plate provided with pins 32, set

at such intervals apart as it is desired the holes in the plate are to be punched-th at is, the pattern to be cut orpunched in the plate is shown in the pattern in raised portions or pins. This pattern extends over the plate and is secured by the clamps 25 or to the plate parallel to the lines on which the punching or cutting is to be done.

The punch 33 is stationed at one side of the table, and it may be of any suitable pattern or construction. Extending from the punch is a guide-arm 34, which may be pivoted to the frame of the punch and extends over the plate to the pattern, the end of the guide-arm being provided with a notch 35, which is exactly in alinement with the center of the punch and is adapted to engage with the pins or projections ot the pattern. This notch, where the pattern is a continuous raised line, may be replaced by a suitable {inger adapted to follow the line of the pattern. This guide-arm Slt may be autom atically raised whenever the plate is moved to clear the plate or pattern, or this may be done by the lateral movement of the plate. This lateral movement of the plate is caused by the movement of a lever 3G, which is pivoted on the lower rod 22 and through which the upper rod 22 passes. B y moving the lever the upper rod 22 and the plate carried thereon are movedineither direction, allowing two or more rows of holes to be punched or an irregular pattern to be cut.

In order to automatically raise the arm 34, the moving member of the punch is provided with an arm 37, carrying a latch 3S, which engages the arm when the punch is in its lower position, and as the punch rises the guide is lifted and the latch 3S is automatically disengaged'by the cam-plate 39, and the guidearm falls upon the pattern ready to engage the next pin.

The operation is as follows: The plate and pattern being secured to the frame, the carriage t is moved in the desired direction 1ongitudinally by the lever 14 through its connection with the clutch 6 until the iirst pin comes opposite the notch 35 of the guide-arm 34. The plate is then bythe lever 36 moved laterally until the shoulder of the notch engages the pin. The punch is then operated. It' the guide-arm is movable on the upward movement of the punch, it is raised to clear the pins at the same time the carriage carrying the plate is moved, so that when the arm falls it is at or near a position to engage the next pin.

It will be noted that instead of making the arm 3i movable the arm may be caused to clear the pins solely by the movement of the carriage.

Of course it will be understood that the apparatus might be so constructed as to have the guide-arm movable and the pattern stationary.

The advantages of my invention are that an exact duplication of the pattern can be punched, stamped, or cut without any laying oft' on the Work.

What I Claim isl. In a metal work-table, the combination of a movable frame, a pattern, and a guidearm, with a metal-working tool, substantially as specified.

2. In a metal work-table, the combination of a movable frame, a pattern-holder, and a guide-arm, with a metal-working tool, substantially as specified.

3. In a metal work-table, the combination of a movable frame for carrying the metal, a pattern -holder mounted on the movable frame, and a guide-arm adapted to engage with the pattern, substantially as specified.

4. In a metal work-table, the combination of a movable frame, a longitudinal rack, a clutch adapted to engage the rack, and a le ver connected with the frame and with the clutch, substantially as specified.

5. In a metal work-table, the combination of a Ymovable frame, a lever for moving the frame, a longitudinal rack, a clutch adapted to engage the rack, a lever for tightening and loosening the clutch on the rack, and automatic releasing-levers for releasing the clutch at the end of the movement of the frame-moving lever, substantially as specified.

6. In a metal work-table, the combination of a movable frame having devices for holding the metal, said frame being capable of a lateral movement, a clutch and lever for imparting a longitudinal movement to the frame, a lever for imparting a lateral movement to the frame, a pattern-holder, and a guide-arm adapted to engage with the pattern and to thereby determine the position of the metal, substantially as specified.

7. In a metal work-table, the combination of a movable trame, having a carriage connected therewith, a longitudinal rack and a clutch adapted to engage with the rack, a lever for tightening and loosening the clutch on the rack, a lever for imparting a longitudinal movement to the frame and carriage, a lever for imparting a lateral movement to the frame, a pattern-carrier, and a guide-arm, substantially as specified.

In testimony whereof I have hereunto set my hand.

CYRUS M. CARNAIIAN. Witnesses:

H. M. CORWIN, JAMES K. BAKEWELL.

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